Detect Circular Pattern Match

Code

#include <stdio.h>
#include <stdint.h>

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    uint16_t rotated = reg;

    for (int i = 0; i < 16; i++) {
        if (rotated == target) {
            return 1;
        }
        // Circular left rotation by 1 bit
        rotated = (rotated << 1) | (rotated >> 15);
    }

    return 0;
}
int main() {
    uint16_t reg, target;
    scanf("%hu %hu", &reg, &target);
    printf("%hhu", is_circular_match(reg, target));
    return 0;
}

Solving Approach